Feed mechanism for saw-mills



(No Model.)

W. M. WILKN.

FEED MEUHANISM FOR SAW MILLS.

Patented 001;. 9, 1883.

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'UNITED STATES PATENT. OFFICE.

' WILLIAM M. wILKIN, or EAST sAGINAw, MICHIGAN.

FEED MECHANlSM FOR SAW-MILLS.

EPECIFICATION forming part of Letters PatentNo. 286,357, dated October9, 1883.

Application filed April 1B. 1883. (No model.)

.Mechanism for Saw-Mills, and I do hereby 4 and improved rope .feed andgig apparatus for l declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same. Y

This invention consists in providing a new operating the log-carriage ofa sawmill.

The invention is illustrated in the accompanying drawings, as follows:Figure 1 is a top or plan view of a saw-mill in which this invention isapplied. 'Fig'. 2 is a side elevation. Fig. 3 is a detail ofconstruction, being a section of the friction-gearing. i

The parts shown are indicated by letters of reference, as follows:

P P are the carriage tracks or ways. N is the carriage. C. is the saw,and C the sawarbor; B is the driving-pulley on the sawarbor. A is themain driving-pulleyon the main shaft. pulley on the main shaft. d `isthe feed and gig driving belt. D is the main pulley on the feed and gigcounter-shaft, which is on the same door of the mill as the main shaft.F is a second counter-shaft, arranged immediately below thecarriage-way, and is in function the same as a rag-shaft, and forconvenience will be called the rag-shaftj F are pulleys on the shaft F.fis adirect-aeting belt, running from the pulley F3 on the counter-shaftto the pulley I4v on the rag-shaft.

4o f is a back-loop belt, which runs from asimilar pulley to F'f on theother side of the pulley D', over reversingpulley h h. tothe pulley E onthe rag-shaft. G and G are frictiondisks connected, respectively, withthe pulleys F and F. T is a sheave mounted on the ragshaft, and mayeither be mounted'loose, as shown in Fig. 3, and held from lateralInove- Inent by collars, or it may be keyed on the shaft. Tl is a secondsheave at the opposite end of the carriage-way. R is awire rope,

running over the sheaves T and T', and hav- D is the feed and gigdrivingy ing its ends attached to the carriage by elastic draw-heads S.U is a tightener for the cable R, and V is a tightener for thereversing-pulleys h h.

In an application for a patent ied by me August 2l, 1882, for a ropefeed and gig apparatus, I refer to the fact that a carriage may beoperated by a single cable attached to the 'carriage and running onsheaves placed at each end of the carriage-way on shafts which revolveoppositely, said sheaves being operated from said shafts by clutches.

The present invention is ran improv ement on the `construction justreferred to, in that the cable'is propelled always from one end of thecarriage-way, thus saving in gearing, and the 'manner of clutching ismuch improved.

The Vclutching apparatus shown here is substantially the same as thatshown in another application by me of even date herewith, where f it isapplied to an ordinary rag-shaft. In this instance the double-cupfriction-disk is made a sheave for propelling the cable.

The friction-disks G and G are moved or shifted into connection by thegearing I I I2 I?, I4 I5 I, of which I6 is the sawyerslever. By thismeans the sawyer has perfect control of the clutching apparatus, and canreverse the movement of the sheave 'I at any time, and so change thedirection of movement of the cable R, and thus of the carriage also.

What I claim as new isl. In the feed and gig mechanism'of a saw.;

mill, the combination, substantially as herein shown, of a carriagehaving an elastic drawhead, two friction-disks sleeved upon one shaft,geared to run in opposite directions, and arranged to face each other, arope-propelling sheave having friction-disks on each of its sides,mounted on said shaft between said sleeved disks, shifting mechanism forthrowing either of said sleeved disks into contact with said sheave,and, finally, a propelling-cable at tached to the logcarriage andpassing over said sheave, and another sheave placed at the opposite endoi the carriage-way.

2. In a sawmill, the combination, lsubstantially as shown, of thefollowing elements: two sheaves placed one at each end of thecarriage-way, a rope or cable passing over said sheavesand connected atits ends with the IOO n Y Y @$6,357

log-carriage, two clutching devices geared to clutcliingdevices intogear with the adjoining Io be revolved in opposite directions, andmountclutching-surface onthe said sheave.

ed upon the shaft of one of said sheaves and In testimonywhereof I affixniy signature on opposite sides of said sheave, Which is proin presenceof two WitnessesA 5 vided on its opposite sideswith clutchinsur facescompanionable with the'said opposbitelyn n NYILLIAM M' VULKIN rotatingclutching devices, and, finally, ashift- Witnesses:

ing apparatus, substantially as shown, for JNO. K. HALLOCK,

throwing either of said oppositely-rotating ROBT. H. PORTER.

